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2000 Census County Subdivision Block Map
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A Comparison of Predicted and Actual Trophic Status of Lake Ray Roberts, Texas Based on Chlorophyll A
Two years before impoundment, the trophic status of Lake Ray Roberts was predicted by applying the total phosphorus input into the Organization for Economic Cooperation and Development (OECD) eutrophication model. Predicted mean summer epilimnetic (MSE) chlorophyll a of Elm Fork arm, Isle duBois arm and Main Body were in the eutrophic category of the OECD model. Observed MSE chlorophyll a two years after impoundment of Elm Fork arm, Isle duBois and Main Body had not reached their predicted means and were at the mesotrophic-eutrophic boundary of the OECD model. Six years after impoundment, observed MSE chlorophyll a for Main Body, was closer to its predicted mean and in the eutrophic category of the OECD model. Six years after impoundment, Elm Fork arm was the most productive area of Lake Ray Roberts. Observed means of chlorophyll a, total phosphates, suspended solids and turbidity were often highest in the Elm Fork arm. Wastewater effluent from Gainesville and Valley View, TX, had an impact on productivity in Elm Fork arm.
Date:
May 1999
Creator:
Lytle, Lili Lisa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
How Healthy is the Upper Trinity River?: Biological and Water Quality Perspectives
This conference report contains discussions and papers from a symposium hosted at Texas Christian University, in Fort Worth, Texas, examining the ecological health of the Upper Trinity River, and the impacts of various human activity, such as agriculture, urbanization, and waste management. The papers cover the effect of water quality on urban rivers, long-term water quality trends in the Trinity River, solutions that may improve water quality in the river, as well as biological, agricultural and waste-water issues.
Date:
1990
Creator:
Jensen, Ric
Object Type:
Book
System:
The UNT Digital Library
Pre-Impoundment Estimations of Nutrient Loading to Ray Roberts Lake and Prediction of Post-Inundation Trophic Status
Excessive nutrient loading of natural and artificial lakes has led, in some systems, to plethoric algal and aquatic macrophyte growth which can result in aesthetic degradation and undesirable tastes and odors. It would be advantageous to have some indication of the potential trophic status of a reservoir before it is filled. An objective of this study was to assess the water quality and nutrient loading potential of the tributaries entering Ray Roberts Lake, a large reservoir located in north central Texas. Samples from a maximum of thirteen sites were collected on the Elm Fork, Trinity River, Isle duBois Creek, and five additional tributaries. Data were also collected during six storms, from atmospheric deposition collectors, and from soil-water microcosms. The relationship between watershed landuse and mean water nutrient concentrations was evaluated. Significant differences will exist between the two major arms of Ray Roberts Lake: Elm Fork, Trinity River and Isle duBois Creek. While the majority of the annual phosphorus and nitrogen load entering both tributaries is coming from overland flow, the proportion is higher in Isle duBois Creek. Point sources in the Elm Fork contribute a larger percentage of the bioavailable phosphorus, which is significantly greater than in Isle duBois Creek. …
Date:
May 1988
Creator:
Pillard, David Alan, 1958-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Survey of Landowner Attitudes Toward the Construction of Lake Ray Roberts
Documentation of social impacts resulting from the construction of Lake Ray Roberts is to be incorporated into a two year post-impoundment study. Research objectives are to: 1) locate current residences of landowners and previous landowners who were displaced; 2) determine social impacts resulting from construction of Lake Ray Roberts; 3) document degree of satisfaction with current living conditions; 4) document landowners' degree of satisfaction associated with COE negotiations; 5) document landowners' observations. Landowners were identified by telephone and sent a mail-back questionnaire. Respondents were generally happy with current residences and communities. While courtesy and sufficient information were provided by the COE, respondents would have preferred for property settlements to be more consistent and timely.
Date:
August 1991
Creator:
Norris, Paula Sue
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Comfort Women in Comfort History
Book about the history of notable women in Comfort, Texas. The book discusses female school teachers, journalists, religious leaders, free thinkers, artists, authors, and other women who made significant contributions to the establishment of the city of Comfort.
Date:
2008
Creator:
Stewart, Mike & Stewart, Anne
Object Type:
Book
System:
The Portal to Texas History
2000 Census County Block Map: Cooke County, Block 20
Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Wise County, Block 4
Parent map for Wise County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Grayson County, Index
Index map for Grayson County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:88,456.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Cooke County, Index
Index map for Cooke County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:88,451.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Cooke County, Index
Index map for Cooke County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:88,451.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Denton County, Block 3
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Denton County, Block 1
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Denton County, Block 5
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Denton County, Block 4
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Denton County, Index
Index map for Denton County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:87,409.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Wise County, Block 4
Parent map for Wise County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Denton County, Block 3
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Denton County, Block 6
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Cooke County, Block 19
Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Cooke County, Block 17
Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Denton County, Block 6
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Denton County, Index
Index map for Denton County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:87,409.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
2000 Census County Block Map: Denton County, Block 2
Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.
Date:
2000
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
1990 Census County Block Map (Recreated): Grayson County, Block 32
Parent map for Grayson County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:12,500.
Date:
1990
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History